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27/4 TYPE GSA ALTERNATORS |
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GENERAL INFORMATION ABOUT 27/4 TYPE |
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| PRIME POWER RANGE (STANDBY) | 10 - 27.5 KVA (11 - 30.25 KVA) |
| SPEED / NUMBER OF POLES | 1500rpm / 4 POLES |
| EXCITATION / INSULATION TYPE | SELF REGULATING, BRUSHLESS / CLASS F |
| CONFORM STANDARDS | VDE 0530; IEC 34-1; TS 3205-3206-3209 |
| AMBIENT TEMPERATURE / ALTITUDE | 40°C / from sea level to 1000m |
| PROTECTION / CONSTRUCTION TYPE | IP 23 / B3/ B14(Db.B.) - MD35(Sing.B.) |
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27/4 TYPE ALTERNATOR RATING TABLE |
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| TYPE |
Cos phi=0.8 |
Speed
RPM
|
Efficiency
%
|
Drive
Power(HP)
|
GD2-Kpm2
|
Weight
(Kg)
|
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| SINGLE BEARING | DOUBLE BEARING |
PRIME
KVA
|
STANDBY
KVA
|
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| GSA 271 M/4 | GSA 271 M/T4 |
10
|
11
|
1500
|
81
|
13.5
|
0.325
|
116
|
| GSA 272 M/4 | GSA 272 M/T4 |
13
|
14.3
|
1500 |
82
|
17.5
|
0.378
|
122
|
| GSA 273 M/4 | GSA 273 M/T4 |
16
|
17.6
|
1500
|
84
|
22
|
0.472
|
130
|
| GSA 274 L/4 | GSA 274 L/T4 |
20
|
22
|
1500
|
84
|
26
|
0.587
|
150
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| GSA 275 L/4 | GSA 275 L/T4 |
25
|
27.5
|
1500
|
85
|
32
|
0.733
|
170
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| GSA 275 LL/4 | GSA 275 LL/T4 | 27.5 | 30.25 | 1500 | 85 | 33 | 0.750 | 175 |
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27/4 SINGLE BEARING |  |
27/4 DOUBLE BEARING | |
| PART LIST | PART LIST | |||
| DIMENSIONS | DIMENSIONS |
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MOUNTING DETAILS OF 27 TYPE GSA ALTERNATOR WITH SINGLE BEARING The dimensions of diesel engine's flywheels and its cover use in gensets should comform SAE J620d and SAE J617c standards. In GSA alternators, the disc mounted to the engine's flywheel and the adaptor of alternator mounted to the engine's flywheel cover are design according to these standards. The SAE standards of engines that will used in genset should be informed to us while ordering. If the SAE number of diesel engine's flywheel and its cover are not known, please find the SAE numbers of your engine's flywheel and its cover by comparing the dimensions given in SAE J620d and SAE J617c standards. The adaptor and disc combinations of 27 type GSA alternators are given in the table below :
MOUNTING DETAILS OF 27 TYPE GSA ALTERNATOR WITH DOUBLE BEARING In the gensets with double bearing alternators, the power is transmited to the alternator's rotor with the coupling mounted to the end of alternator's shaft. The coupling should be elastic to minimise combustion of the diesel engine's effect on the alternator shaft. Gensan produces GK type couplings for mounting GSA alternators to diesel engines. For 27 type alternators GK 150 coupling should be used. At the end of the alternator shaft, there is a screw hole according to DIN 332 standard for mounting or dismounting purposes of the pulley or the coupling. Mounting of the pulley or the coupling can be done by placing a mounting apparatus to the screw hole. For easier mounting, the coupling or the pulley should be machined to H7 tolerance and heated to 120-150ºC. Avoid any kind of heavy hammering to prevent the ball bearings from damaging. |
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